While side effects can occur after receiving the COVID-19 vaccine, just like with any other vaccine you receive, they are typically minor and short-lived. Adverse events from the vaccine are extremely rare, and some people experience no side effects at all.
The Centers for Disease Control and Prevention lists common side effects of the vaccine, including pain, redness and swelling at the injection site along with tiredness, headache, muscle pain, chills, fever and nausea.
After the second vaccine dose, side effects can sometimes be more intense than with the first, according to the CDC, but they are normal signs that your body is building protection against the virus and should go away within a few days. While COVID-19 vaccines may cause side effects, they cannot and do not give you COVID-19.
The CDC encourages people to contact their doctor if side effects do not go away after a few days.